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Key Facts: Painter Trade Test Exam

100

Practice Questions

OpenExamPrep

QCTO/NAMB

Designated Trade Test

QCTO

Practical

Competency Assessment

NAMB

Competent

Pass Outcome

NAMB

Typical Theory Entry

QCTO

SANS

SA Coating Standards

SABS

The Painter artisan trade test is the QCTO/NAMB designated trade test that qualifies a painter and decorator in South Africa. It is a practical, competency-based assessment with an underpinning trade-theory component, conducted at a NAMB-accredited Trade Test Centre and graded Competent or Not Yet Competent rather than by a single published mark. Access typically requires N2 trade theory (maths, engineering science and relevant trade subjects) plus an apprenticeship or the required years of painting experience. The theory spans surface preparation, paint types and coatings, application methods, defects and remedies, colour and finishes, materials and safety/MSDS, using South African terminology and SANS standards. This free prep includes 100 research-based practice questions with explanations and an AI tutor.

Sample Painter Trade Test Practice Questions

Try these sample questions to review concepts for the Painter Trade Test exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Before painting a newly plastered interior wall, why must the plaster be allowed to cure and dry thoroughly before applying a film-forming coating?

A.To allow the colour to develop in the plaster

B.Because residual moisture and free alkali can cause efflorescence, blistering and saponification of the coating

C.To make the surface rougher for better key

D.Because plaster shrinks and needs to expand first

Explanation: Fresh cement plaster contains alkalis and free moisture. Painting too soon traps moisture (blistering) and lets alkali attack oil-based binders (saponification), while drying salts cause efflorescence. New plaster is typically left to cure 4-6 weeks before painting.

2What is the main purpose of an alkali-resisting primer (plaster primer) on new masonry and cement plaster?

A.To add gloss to the final finish

B.To seal the porous surface and neutralise/resist alkali attack so the topcoat adheres

C.To darken the substrate colour

D.To replace the need for any topcoat

Explanation: An alkali-resisting primer seals the suction of porous plaster and protects the system against the free alkali in cement, preventing saponification and ensuring uniform topcoat adhesion and sheen. It is the correct first coat on new cementitious surfaces.

3When preparing new galvanised (zinc-coated) iron sheeting for painting, what treatment is needed to ensure paint adhesion?

A.Apply oil-based undercoat directly

B.Degrease and apply an etch (mordant/wash) primer or a dedicated galvanised-iron primer

C.Sand to bright metal and apply red oxide

D.No treatment; paint adheres directly to new zinc

Explanation: New galvanised surfaces are smooth and contain passivation/oils that resist adhesion. The trade practice is to degrease and use an etch (acid wash/mordant) primer or a galvanised-iron primer that bonds to zinc before topcoats; weathering or a mordant solution can also key the surface.

4What is the correct first coat (primer) for bare structural mild steel exposed to a normal atmosphere?

A.PVA emulsion

B.An anti-corrosive metal primer such as a zinc phosphate or red oxide primer

C.Plaster primer

D.Wood primer

Explanation: Bare ferrous steel must first receive an anti-corrosive primer (e.g. zinc phosphate or red oxide) to inhibit rust before undercoats and topcoats. The surface should be cleaned to remove mill scale, rust and grease first.

5Why are knots in new softwood sealed with a knotting solution (shellac knotting) before priming?

A.To make the wood harder

B.To seal in resin/sap that would otherwise bleed through and discolour the paint film

C.To fill nail holes

D.To darken the timber grain

Explanation: Knots exude resin that bleeds through paint, causing staining and softening of the film. Shellac-based knotting seals the knot so the wood primer and finish coats remain unstained. This is standard preparation on new resinous softwood.

6In painting trade theory, what is the correct sequence of operations when preparing and finishing new softwood joinery with an enamel (gloss) system?

A.Topcoat, undercoat, primer

B.Prime, stop/fill, undercoat, topcoat (with rubbing down between coats)

C.Undercoat, primer, topcoat

D.Stop, topcoat, prime

Explanation: The correct order is: seal knots, apply wood primer, then stop nail holes and fill defects, apply undercoat, rub down, then the enamel topcoat. Filling is done after priming so the stopper adheres to a sealed surface, and rubbing down between coats gives a smooth finish.

7What is the purpose of 'rubbing down' (sanding) between coats with fine abrasive paper?

A.To remove the previous coat completely

B.To remove nibs and gloss and provide a mechanical key for adhesion of the next coat

C.To add colour

D.To make the paint dry faster

Explanation: Lightly abrading a cured coat removes dust nibs and the surface gloss, giving a mechanical key so the next coat bonds well and lies flat. It is essential between gloss/enamel coats, which otherwise have poor inter-coat adhesion.

8Which abrasive is correct for wet flatting (wet sanding) an enamel undercoat between coats?

A.Glasspaper (sandpaper)

B.Silicon-carbide waterproof (wet-and-dry) paper used with water

C.Steel wool only

D.Garnet paper

Explanation: Wet flatting uses silicon-carbide 'wet-and-dry' paper lubricated with water; it cuts the film smoothly, prevents clogging and reduces dust. Ordinary glasspaper and garnet paper disintegrate when wet and are for dry sanding of timber.

9Why should grease, oil and silicone contamination be removed from a surface before painting?

A.It changes the paint colour

B.Contaminants prevent wetting and adhesion and cause defects such as cissing (cratering/fish-eyes)

C.It makes the paint dry too hard

D.It has no real effect on adhesion

Explanation: Oily or silicone contamination stops the wet paint from wetting the surface evenly, causing the film to crawl/ciss into craters or fish-eyes and lose adhesion. Degreasing with a suitable solvent or detergent before painting is essential.

10What does 'making good' refer to in surface preparation of a previously painted wall?

A.Applying the final topcoat

B.Filling cracks and holes, sanding, and spot-priming bare patches so the surface is sound and uniform

C.Choosing the colour scheme

D.Washing brushes after work

Explanation: Making good means repairing defects: raking out and filling cracks/holes with a suitable filler, sanding flush, and spot-priming or sealing bare or repaired areas so the surface is sound, level and uniformly absorbent before finishing.

About the Painter Trade Test Exam

The Painter artisan trade test is the QCTO/NAMB designated trade test that certifies a candidate as a qualified painter (painter and decorator) in South Africa. It is a practical, competency-based assessment with an underpinning trade-theory component, conducted at a NAMB-accredited Trade Test Centre and graded Competent or Not Yet Competent. Access typically requires N2 trade theory plus relevant apprenticeship or work experience.

Exam sponsor: QCTO / National Artisan Moderation Body (NAMB), conducted at accredited Trade Test Centres. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Practical competency trade test plus a trade-theory (knowledge) component, assessed Competent / Not Yet Competent at a NAMB-accredited centre; this practice bank is 100 selected-response theory items

Time Limit

Multi-day practical assessment (duration set by the accredited Trade Test Centre)

Passing Score

Competent against the trade test standard (typically 60%+ per assessed section)

Exam / Certification Fees

Set by each accredited Trade Test Centre (commonly several thousand rand); varies

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20%

Surface Preparation

Curing of new plaster, alkali-resisting and metal primers, knotting, galvanised-iron etch/mordant treatment, rust and mill-scale removal, making good, de-glossing and degreasing

20%

Coatings & Paint Types

Paint composition, PVA/acrylic emulsions, alkyd enamels, primers, undercoats, varnishes, stains, epoxy and two-pack systems, bituminous coatings and drying mechanisms

16%

Application Methods

Brushing, laying-off, cutting in, rolling, conventional and airless spraying, overlap and fan control, overcoat times and the top-to-bottom work sequence

18%

Defects & Remedies

Blistering, efflorescence, saponification, runs and sags, cissing, chalking, cracking, bleeding, wrinkling, peeling, flashing and picture framing

12%

Colour & Finishes

Colour theory, primary and complementary colours, tints/shades/tones, tinting and boxing, sheen levels, metamerism and decorative finishes

Materials

Brushes, rollers, spray equipment, fillers, abrasives, spreading rate, volume solids, viscosity, storage and SANS coating standards

Safety & MSDS

MSDS/SDS, solvent and lead hazards, respiratory and fall protection, ventilation, flash point, spontaneous combustion of rags and hazardous-waste disposal

Preparing for the Painter Trade Test Exam

What You Need to Know

Passing score: Competent against the trade test standard (typically 60%+ per assessed section)
Assessment: Practical competency trade test plus a trade-theory (knowledge) component, assessed Competent / Not Yet Competent at a NAMB-accredited centre; this practice bank is 100 selected-response theory items
Time limit: Multi-day practical assessment (duration set by the accredited Trade Test Centre)
Exam / certification fees: Set by each accredited Trade Test Centre (commonly several thousand rand); varies Official sources

Using Our Practice Resources

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

Painter Trade Test: Suggested Study Strategy

1Learn the full enamel system order on timber: seal knots, prime, stop/fill, undercoat, rub down, then topcoat

2Know the cause and remedy of each named defect (blistering, efflorescence, saponification, cissing, chalking, flashing) — these are favourite theory questions

3Use South African terms and products: PVA emulsion, alkyd enamel, etch/mordant treatment on galvanised iron, alkali-resisting plaster primer

4Be able to calculate paint quantity from area and spreading rate (m2 per litre) for two coats

5Memorise the top-to-bottom work sequence and why you keep a wet edge to avoid flashing and picture framing

6Complete all 100 practice questions and review every miss with the AI tutor before your trade test

Frequently Asked Questions

Who runs the South African Painter trade test and where is it taken?

The Painter artisan trade test is a QCTO/NAMB designated trade and is conducted at a NAMB-accredited Trade Test Centre. It is a practical, competency-based assessment with an underpinning trade-theory component, graded Competent or Not Yet Competent.

How many questions are on the Painter trade test?

The trade test is primarily practical, and the number of trade-theory questions is not centrally published and varies by Trade Test Centre. This free bank of 100 research-based questions targets the underpinning theory you are expected to know.

What do I need to qualify to write the Painter trade test?

Access typically requires an N2 trade theory certificate (maths, engineering science and the relevant trade subjects) plus a completed apprenticeship or the required years of relevant painting experience, with registration at a NAMB-accredited centre.

What topics does the Painter trade theory cover?

It covers surface preparation, paint types and coatings, application methods, defects and their remedies, colour and finishes, materials and tools, and safety/MSDS, using South African terminology and SANS standards.

Which paint and coating standards apply in South Africa?

South African work uses SANS standards such as SANS 10064 for preparation of steel surfaces and SANS 10186 for coating structural steelwork, together with manufacturers' data sheets, rather than overseas codes like BS or ASTM. Knowing the correct SA terminology (PVA, enamel, etch primer, mordant wash) matters.

Is this free Painter trade test practice useful for the real assessment?

Yes. The 100 questions drill the underpinning trade theory the assessor expects across preparation, coatings, application, defects, colour, materials and safety, with a teaching explanation for every answer plus a free AI tutor. All content is free forever and updated for 2026.

Free Practice Questions for Painter Trade Test

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